Results 21 to 30 of about 10,496 (245)

Identification of TiO2 Polymorphs of the Bauxite Deposit in Central Guangxi by Laser Raman Spectroscopy

open access: yesYankuang ceshi, 2022
BACKGROUND Rutile, anatase and brookite are TiO2 polymorphs. In the rutile in-situ U-Pb dating, rutile was determined primarily on electron microprobe data and cathodoluminescence images, while these methods sometimes could not effectively distinguish ...
ZHANG Yongqing   +6 more
doaj   +1 more source

Structure and Photocatalytic Properties of Ni-, Co-, Cu-, and Fe-Doped TiO2 Aerogels

open access: yesGels, 2023
TiO2 aerogels doped with Ni, Co, Cu, and Fe were prepared, and their structure and photocatalytic activity during the decomposition of a model pollutant, acid orange (AO7), were studied.
Tinoco Navarro Lizeth Katherine   +3 more
doaj   +1 more source

Low-Temperature Processed Brookite Interfacial Modification for Perovskite Solar Cells with Improved Performance

open access: yesNanomaterials, 2022
The scaffold layer plays an important role in transporting electrons and preventing carrier recombination in mesoporous perovskite solar cells (PSCs), so the engineering of the interface between the scaffold layer and the light absorption layer has ...
Jiandong Yang   +6 more
doaj   +1 more source

Stable hydrosols for TiO2 coatings [PDF]

open access: yes, 2010
The optimum processing parameters required to synthesize, by hydrolysis of titanium isopropoxide (TIP), highly stable hydrosols composed of nanoparticles of the smallest possible size, are deduced both from data available in literature and from our own ...
Alphonse, Pierre   +2 more
core   +2 more sources

Synthesis of Pure Brookite Nanorods in a Nonaqueous Growth Environment

open access: yesCrystals, 2019
Brookite TiO2 is the most difficult TiO2 polymorph to synthesize. The available methods in the literature to produce brookite nanostructures mostly use water-based techniques for the preparation of water-soluble Ti complexes first, followed by a ...
Mahmoud Hezam   +5 more
doaj   +1 more source

Brookite: Nothing New under the Sun? [PDF]

open access: yesCatalysts, 2017
Advances in the synthesis of pure brookite and brookite-based TiO2 materials have opened the way to fundamental and applicative studies of the once least known TiO2 polymorph. Brookite is now recognized as an active phase, in some cases showing enhanced performance with respect to anatase, rutile or their mixture.
Monai, Matteo   +2 more
openaire   +4 more sources

Photocatalytic oxidation of methyl tert-butyl ether in presence of various phase compositions of TiO2 [PDF]

open access: yes, 2019
MTBE (methyl tert-butyl ether) represents a rising threat to the environment, especially drinking water, and its effective removal (with all by-products) is necessary.
Hrádková, Květoslava   +5 more
core   +1 more source

Brookite versus anatase TiO2 photocatalysts: Phase transformations and photocatalytic activities [PDF]

open access: yes, 2013
Titanium dioxide nanoparticles consisting of pure anatase, anatase-rich, brookite-rich, and pure brookite modifications were synthesized and characterized by X-ray diffraction, field emission-scanning electron microscopy and nitrogen adsorption.
Alkaim, Ayad   +3 more
core   +2 more sources

Catalytic coatings on steel for low-temperature propane prereforming to solid oxide fuel cell (SOFC) application [PDF]

open access: yes, 2009
Catalyst layers (4–20 lm) of rhodium (1 wt%) supported on alumina, titania, and ceria–zirconia (Ce0.5Zr0.5O2) were coated on stainless-steel corrugated sheets by dip-coating in very stable colloidal dispersions of nanoparticles in water.
Alphonse, Pierre, Ansart, Florence
core   +2 more sources

Comparison on the TiO2 crystalline phases deposited via dip and spin coating using green sol–gel route

open access: yesJournal of Materials Research and Technology, 2019
TiO2 exist in three polymorphs known as anatase, rutile and brookite. Amongst these polymorphs, brookite are less reported and mostly produced as a by-product.
Nur Dalilah Johari   +3 more
doaj   +1 more source

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